Eleuthero

Eleutherococcus senticosus

Family: Araliaceae Part used: Root and rhizome

Key Compounds

• Syringin (eleutheroside B)
• Isofraxidin (eleutheroside B1)
• Ciwujianosides
• Acanthosides
• Beta-sitosterol (eleutheroside A)
• Oleanolic acid
• Caffeic acid
• Chlorogenic acid

Traditional Use

• Soviet performance research — tested on athletes, military, and cosmonauts from the 1960s onward by Israel Brekhman's team
• Traditional Northeast Asian medicine — used in Chinese, Korean, and Japanese traditional medicine as a tonic and fatigue remedy
• Olympic and professional athletics — Soviet Olympic team used it from the 1970s; used by many athletes internationally through the 1980s
• Space medicine — cosmonauts used standardised eleuthero preparations on long-duration missions
• Modern adaptogen applications — stress, fatigue, immune support, athletic recovery

The plant was used in Soviet space medicine before most Western herbalists had heard of it.

Israel Brekhman, a pharmacologist at the Far East Research Institute in Vladivostok, spent the 1960s and 70s testing Eleutherococcus senticosus on Soviet athletes, military personnel, cosmonauts, miners, and deep-sea divers. The tests showed improvements in endurance, recovery, mental performance under stress, and tolerance of extreme conditions. The Soviet Ministry of Health approved it as an official medicine. The Olympic team used it. Cosmonauts took standardised preparations on long-duration missions.

None of this research appeared in Western scientific literature until the 1980s. The language barrier was not an accident. When Western herbalists discovered “adaptogens” in the late 1980s and 90s, they were discovering work that had been complete in Vladivostok for twenty years.

Meet the plant

A thorny deciduous shrub, 2–3 metres tall. Not a climbing vine like schisandra, not a rosette herb like most medicinal plants — a shrub, upright, with distinctive five-leaflet compound leaves and small clusters of purple to yellow flowers. The thorns are real. Harvesting the root involves the thorns.

The berries are small, black, and round. They are not the medicinal part. The root — thick, greyish-brown, strongly fibrous — is what is used. It grows in temperate deciduous and mixed forest, often at forest edges and in disturbed areas where light reaches the ground. In Japan it is found in Hokkaido and the cooler forests of northern Honshu.

The naming problem

Eleuthero is not ginseng.

Panax ginseng (Asian ginseng) and Panax quinquefolius (American ginseng) are in the genus Panax, also in the family Araliaceae. Eleuthero is in the genus Eleutherococcus, same family, different genus. They share distant botanical ancestry and some pharmacological overlap. They do not contain the same active compounds. The Panax ginsengs contain ginsenosides; eleuthero does not. Eleuthero contains eleutherosides; Panax ginseng does not.

The “Siberian ginseng” name was applied by traders who saw an opportunity: ginseng had a long, established reputation as a premium tonic. A plant with similar adaptogenic properties from Siberia, positioned as a geographical variant of ginseng, was commercially appealing. The naming choice was marketing, not botany.

The American Herbal Products Association eventually recommended “eleuthero” as the commercial name to reduce this confusion. Some products are still sold as Siberian ginseng. The name remains inaccurate. The plant itself does not have an opinion on what it is called.

From Vladivostok to the Olympics

Eleuthero’s journey into mainstream herbal medicine is specifically Soviet. The plant had been used in traditional Chinese, Korean, and Japanese medicine for centuries as a general tonic — 刺五加 (ci wu jia) in Chinese herbalism. But its modern story begins with Brekhman.

Brekhman was working in the Soviet Far East, where the plant grew locally. His interest was in finding plants that could increase human performance under adverse conditions without the side effects of stimulants. His colleague Nikolai Lazarev had coined the term “adaptogen” in 1947. Brekhman spent twenty years building the evidence base for what that term meant in practice.

The test populations were telling. Soviet athletes — track and field, weightlifting, swimming — used eleuthero preparations and measured results in the 1970s Olympics. Factory workers in Siberian industrial facilities used it and showed lower sick-day rates. Cosmonauts on the Mir space station used standardised preparations and reported subjective improvements in alertness and endurance. These were not small convenience samples. They were large, operationally motivated research programmes.

The research limitations are real: many studies lacked Western-standard randomised blinding, and Soviet-era research was published in ways that made independent replication difficult. But the scale and consistency of the findings — across different populations, different outcomes, different researchers — was sufficient to establish real effects, not just theoretical ones.

The chemistry

Eleutherosides are the primary active compounds. The name covers a chemically diverse group — they were numbered in order of discovery (eleutheroside A, B, B1, C, D, E…) and are not all structurally related. The main pharmacologically active ones:

Eleutheroside B (syringin) is the most commonly used standardisation marker. It is a phenylpropanoid glycoside — related to the compounds in many other medicinal plants — and has demonstrated anti-inflammatory and immune-modulating activity.

Eleutheroside E (acanthoside D) is thought to be particularly important for the adaptogenic effects. It has shown effects on the HPA axis modulation in animal models.

Ciwujianosides are a group of compounds unique to Eleutherococcus that contribute to the immune-modulating and anti-fatigue properties.

Unlike the ginsenosides (steroidal saponins) in Panax ginseng, the eleutherosides are primarily phenylpropanoids, lignans, and coumarins. The chemistry is different. This is why the plants should not be considered equivalent.

What people actually do with it

Standardised extract: most common form. Standardised to eleutheroside B content (minimum 0.8% is the typical commercial specification). 300–1200 mg daily, in divided doses, taken in the morning and early afternoon. Not in the evening — the activating effect can disrupt sleep.

Tincture or liquid extract: 2–4 mL, 2–3 times daily. Traditional preparation method. More variable in active compound concentration than standardised extracts.

Tea (root decoction): dried root simmered in water 20–30 minutes. Mildly woody flavour, less intense than schisandra. 1–2 cups daily. Traditional form in Japan (ezonoukogi) and Korean herbal medicine.

Cycling: Brekhman’s original protocols used eleuthero cyclically — 6–8 weeks on, 2–4 weeks off. The rationale is that tolerance can develop. Modern supplement use often ignores this; traditional protocols observed it.

Athletic performance use: taken preventatively 4–6 weeks before intensive training periods. The research suggests cumulative effects rather than acute performance enhancement — it is not a pre-workout stimulant.

Could you grow this yourself?

Yes, though the thorns will remind you it is not trying to make itself easy to harvest.

Eleuthero is available from specialist nurseries in Japan as a garden shrub. It grows in most of Japan’s climates, with best performance in the cooler regions that match its native range — Tohoku and Hokkaido are ideal. It will grow in Kanto and further south but may struggle in summer heat.

Plant in partial shade (prefers forest-edge conditions), in moist but well-drained soil. It will eventually spread by suckering. The thorny stems need to be managed if grown near walkways. Not a city garden plant unless you have space.

For medicinal use: the root is harvested in autumn of the third or fourth year, when the plant is established. The root is thick, fibrous, and has a strong earthy smell. Dry it at low heat; it stores well for 1–2 years.

The wild plant grows in Hokkaido’s forests and can be found by those who know what they are looking for. The thorns are a reliable identification feature.

Eleuthero (エゾウコギ) in Japan

Japan’s relationship with eleuthero runs through two separate channels.

The first is the Ainu. Hokkaido’s indigenous people used ezonoukogi (エゾウコギ) — literally “spiny tree of Ezo” (Ezo being the old name for Hokkaido) — as a traditional tonic and stimulant. This use preceded Brekhman’s research by centuries. The plant was known, used, and locally understood as a strengthening herb before Soviet pharmacologists took interest in the same plant in the Soviet Far East.

The second channel is modern. When Brekhman’s adaptogen research became accessible in the 1980s, Japanese supplement companies were early adopters. Eleuthero became a significant category in Japanese functional food and supplement markets. Japanese products tend to use the name エゾウコギ (ezonoukogie extract) rather than the Western “Siberian ginseng,” which preserves the plant’s local identity rather than borrowing ginseng’s reputation.

The kampo connection is limited — eleuthero is not a standard kampo ingredient, and the classical formulas use different plants. This is unusual for a plant with such a long traditional Asian history; the explanation is partly geographical (it is primarily a Hokkaido plant, not Honshu) and partly that its modern Japanese adoption has been through the supplement channel rather than the classical medicine channel.

Things you’re probably wondering

Is eleuthero the same as ginseng? No. Different genus, different active compounds. Panax ginseng contains ginsenosides; eleuthero does not. The “Siberian ginseng” name is a marketing choice, not a botanical fact. The American Herbal Products Association recommends “eleuthero” to avoid the confusion.

Who was Israel Brekhman and why does he matter? Soviet pharmacologist who built the scientific case for adaptogens in Vladivostok from the 1960s through 1980s. His team tested eleuthero and schisandra on athletes, military, and cosmonauts. The results established eleuthero as an official Soviet medicine. Western herbalism largely encountered his completed work in the 1980s and 90s — twenty years after it was done.

What did the Soviet research actually find? Improved physical endurance, faster recovery, better mental performance under cognitive load, better temperature tolerance, enhanced immune function. The studies used large, real-world populations. Many lacked Western-standard blinding. The effects were consistent enough for official medical approval in the USSR.

What is the difference between eleuthero and ashwagandha? Different plants, different active compounds, different origins. Eleuthero has eleutherosides; its research focuses on physical endurance and stress tolerance. Ashwagandha has withanolides; it focuses more on anxiety, sleep, and stress reduction. Both modulate the HPA axis. Eleuthero is more activating; ashwagandha is more calming.

Where does Japan’s eleuthero come from? Wild in Hokkaido (ezonoukogie), available as domestic or imported supplement products. Not a standard kampo ingredient — more common in the supplement and functional food market.

Botanical details

The full compound list

See Also

• Schisandra — the other major plant in Brekhman’s adaptogen research; both used by Soviet cosmonauts
• Rhodiola — another Northeast Asian adaptogen with overlapping stress-tolerance research
• Astragalus — immune-focused tonic from the same East Asian herbal tradition

References

• Brekhman, I.I. & Dardymov, I.V. (1969). New substances of plant origin which increase non-specific resistance. Annual Review of Pharmacology, 9, 419–430.
• Panossian, A. et al. (2009). Adaptogens: tonic herbs for fatigue and stress. Alternative & Complementary Therapies, 9, 327–332.
• Davydov, M. & Krikorian, A.D. (2000). Eleutherococcus senticosus (Rupr. & Maxim.) Maxim. (Araliaceae) as an adaptogen. Journal of Ethnopharmacology, 72(3), 345–393.
• Cicero, A.F. et al. (2004). Effects of Siberian ginseng on sleeping quality. Archives of Gerontology and Geriatrics, 38(Suppl 1), 69–73.